학술논문

Understanding the cascode switching process
Document Type
Conference
Source
The 1st IEEE Workshop on Wide Bandgap Power Devices and Applications Wide Bandgap Power Devices and Applications (WiPDA), 2013 IEEE Workshop on. :186-189 Oct, 2013
Subject
Aerospace
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Engineering Profession
Photonics and Electrooptics
Power, Energy and Industry Applications
Transportation
Logic gates
Switches
Switching circuits
Capacitance
Resistors
Mathematical model
Gallium nitride
Silicon carbide
Wide band gap semiconductors
Language
Abstract
Cascode circuits are useful for driving normally-on wide-bandgap devices, but the switching process must be properly understood to optimise their design. Little detailed consideration has previously been given to this. This paper proposes an idealised mathematical description of the cascode switching process, which is used to show that the stray inductance between the two devices plays a critical role in switching. This idealised model is used to propose methods for optimising cascode performance in different applications.